update README stable version
Fix go vet issues
Merge pull request #31 from mattoddie/master

Fix go vet issues
reader: separate out Configure
configure: fix bool check
reader: separate out errors
reader/writer/conn: refactoring

* make Conn public
* move transport responsibilities into Conn from Reader/Writer
* supply callbacks for hooking into Conn events
conn: name anon cleanup func; add to wg for CloseCB
conn: ensure that readLoop exits before exiting cleanup
reader/writer: refactor configuration